Django vs Rails

gistfile1.txt

class Lesson
  include Mongoid::Document
  field :title, type: String
  field :body, type: String
  field :release_date, type: Date
  field :pdf, type: String
  field :image, type String
  field :audio, type: String
end

class Lesson(models.Model):
    title = models.TextField()
    body = models.TextField()
    release_date = models.DateTimeField()
    pdf = models.TextField()
    image = models.TextField()
    audio = models.TextField()